High Quality Content by WIKIPEDIA articles! Stony Brook University is the largest residential campus in the SUNY system , with approximately 54.5% of undergraduate students iving on campus. To provide the appropriate services to the 9,000 students that need housing , Stony Brook Campus Residences uses 26 residence halls, split up between six quads on campus. Placement of students into residence halls is typically done by campus residences, based on the student`s undergraduate college.